Mechanism of Sulfur Poisoning and Storage: Adsorption and Reaction of SO(2) with Stoichiometric and Reduced Ceria Films on Cu(111)

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F11%3A10108202" target="_blank" >RIV/00216208:11320/11:10108202 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1021/jp207014z" target="_blank" >http://dx.doi.org/10.1021/jp207014z</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/jp207014z" target="_blank" >10.1021/jp207014z</a>

Result language
angličtina
Original language name
Mechanism of Sulfur Poisoning and Storage: Adsorption and Reaction of SO(2) with Stoichiometric and Reduced Ceria Films on Cu(111)
Original language description
We have performed a systematic synchrotron radiation photoelectron spectroscopy (SR-PES) study of the interaction of SO(2) with stoichiometric CeO(2)(111) and reduced CeO(2-x) films supported on Cu(111). Resonant photoelectron spectroscopy (RPES) was utilized to monitor changes in the cerium oxidation states. Adsorption of SO(2) at 150 and 300 K results mostly in formation of sulfite (SO(3)(2-)) species on both reduced and stoichiometric ceria. Other species such as sulfate (SO(4)(2-)), SO(2) chemisorbed at cationic sites, anionic SO(2)(-), atomic sulfur, surface sulfides, and bulk oxy-sulfides were detected. The origin of these species is discussed in relation to the changes in the oxidation state of ceria cations at the surface. The thermal evolutionof the species formed upon adsorption at 150 and 300 K was studied systematically on both the stoichiometric and the reduced films. It was found that the sulfite partially desorbs to release SO(2) and partially decomposes. In general, th
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BM - Solid-state physics and magnetism
OECD FORD branch
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2011
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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